Frank Johnson
WWII | 7th Field Artillery Observation Battalion, XX Corps, 3rd Army
In 1940, Frank Johnson transferred to LSU and joined ROTC. At Officer Candidate School, he became involved with Sound and Flash Ranging, which used audio and visual technology to locate enemy artillery. He attended that school and joined the 7th Field Artillery Observation Battalion. (This interview made possible with the support of WILLIAM C. ALEX.) (6:01)